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SMCPolybutylene & Brass Tube Fittings

SMC Push-Fit Union: 1/4 in OD Size (MPN IN-289-666). Key specifications — Brand: SMC.

SKU 3G-OTH-489027

Brand
SMC
Item
Push-Fit Union: 1/4 in OD Size
Category
Polybutylene & Brass Tube Fittings
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Technical Specifications

SMC
Manufacturer Part Number
IN-289-666
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SMC Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is SMC push-fit union used for?

SMC push-fit unions connect polybutylene or nylon tubing in pneumatic systems without tools. They provide a leak-tight seal for compressed air, vacuum, or inert gas lines in industrial automation, packaging, and material handling applications.

What are the specifications of SMC push-fit union IN-289-666?

The SMC IN-289-666 is a push-fit union for 1/4 in OD tubing. It is made of polybutylene and brass for corrosion resistance and durability. This fitting requires no tools for installation and is suitable for pneumatic systems up to moderate pressure.

Where to buy SMC push-fit union IN-289-666 worldwide?

3G Electric supplies the SMC IN-289-666 push-fit union worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this pneumatic fitting.

How to install SMC push-fit union on tubing?

Cut tubing square, deburr, and push fully into the SMC union until it stops. Pull gently to confirm grip. To release, press the collet evenly and pull tubing out. Ensure tubing is fully inserted for a leak-free seal in pneumatic circuits.

Used in

Common applications for SMC
Automotive assembly — SMC ZP3 flat vacuum pads for handling small components in pick-and-place robots
Semiconductor manufacturing — SMC ZM series vacuum generators with needle valves for precise wafer handling
Food packaging — SMC AW-D series filter regulators for clean compressed air in pneumatic actuators
General industrial automation — SMC AS2211F speed control valves for regulating cylinder speeds in conveyor systems
Vacuum conveying — SMC ZH series box-type vacuum generators for material transport in packaging lines
Machine tool coolant systems — SMC ZF series in-line filters to protect vacuum ejectors from debris

SMC Products

3G Electric supplies SMC polybutylene & brass tube fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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